Live rendering problem in all viewport modes other than Rendered
It looks like your clipping distance is not set optimally for this scene.



Generally when I see this issue, the Clip Start is set too low, and the Clip End is set too high. Try increasing the Clip Start to around .1m and the clip end to 500m

Note: These numbers assume that the Blender file is using real life measurements, or reasonably close to it.